<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <style>
        .box {
            width: 100px;
            height: 100px;
            background: red;
            -webkit-transition: 1s;
            -moz-transition: 1s;
            -o-transition: 1s;
            transition: 1s;
        }
        .box:hover {
            width: 200px;
            height: 200px;
            background: blue;
        }
    </style>
</head>
<body>
    <div id="box" class="box"></div>
    <script>
        /*
          WebkitTransition
          MozTransition
          OTrantion
        */
    </script>
</body>
</html>